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comparison src/share/vm/gc_interface/gcCause.hpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2002-2006 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 //
26 // This class exposes implementation details of the various
27 // collector(s), and we need to be very careful with it. If
28 // use of this class grows, we should split it into public
29 // and implemenation-private "causes".
30 //
31
32 class GCCause : public AllStatic {
33 public:
34 enum Cause {
35 /* public */
36 _java_lang_system_gc,
37 _full_gc_alot,
38 _scavenge_alot,
39 _allocation_profiler,
40 _jvmti_force_gc,
41 _gc_locker,
42 _heap_inspection,
43 _heap_dump,
44
45 /* implementation independent, but reserved for GC use */
46 _no_gc,
47 _no_cause_specified,
48 _allocation_failure,
49
50 /* implementation specific */
51
52 _tenured_generation_full,
53 _permanent_generation_full,
54
55 _cms_generation_full,
56 _cms_initial_mark,
57 _cms_final_remark,
58
59 _old_generation_expanded_on_last_scavenge,
60 _old_generation_too_full_to_scavenge,
61 _adaptive_size_policy,
62
63 _last_ditch_collection,
64 _last_gc_cause
65 };
66
67 inline static bool is_user_requested_gc(GCCause::Cause cause) {
68 return (cause == GCCause::_java_lang_system_gc ||
69 cause == GCCause::_jvmti_force_gc);
70 }
71 inline static bool is_serviceability_requested_gc(GCCause::Cause
72 cause) {
73 return (cause == GCCause::_jvmti_force_gc ||
74 cause == GCCause::_heap_inspection ||
75 cause == GCCause::_heap_dump);
76 }
77 // Return a string describing the GCCause.
78 static const char* to_string(GCCause::Cause cause);
79 // Return true if the GCCause is for a full collection.
80 static bool is_for_full_collection(GCCause::Cause cause) PRODUCT_RETURN0;
81 };